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Impact of packaging materials on bruise damage in kiwifruit during free drop test
Acta Physiologiae Plantarum ( IF 2.6 ) Pub Date : 2020-06-20 , DOI: 10.1007/s11738-020-03081-5
Ming Xia , Xiaoxiao Zhao , Xiaopeng Wei , Weiliang Guan , Xiaobo Wei , Changjie Xu , Linchun Mao

Inappropriate packages and packaging materials are the main causes of bruise damage in the postharvest handling of kiwifruit. This study was conducted to identify the suitable materials to be used as collection box during sorting and grading of kiwifruits. Three different materials of box, wooden box, high-density polyethylene (HDPE) box, and expanded polystyrene (EPS) box were used to simulate kiwifruit dropping in grading line. Among three treatments, the lowest weight loss (4.6%) was observed in the EPS box surface-impacted fruits, the bruise index and bruise area of fruits from EPS box were 36.2% and 47.1% less than that of wooden box, respectively. Furthermore, the peak level of ethylene production and respiration rate of fruits from EPS box was 32.6%, 28.9% lower than that of wooden box, respectively. Compared to wooden box and HDPE box surface, EPS box surface slowed softening, reduced electrolyte leakage and malondialdehyde accumulation. Additionally, lower bruise damage by the EPS box surface was also displayed in physiological attributors including hydrogen peroxide (H2O2), superoxide anion (O2–) and the activities of antioxidant enzymes. The collective data indicated that the EPS box surface reduced the adverse physiological changes caused by dropping of kiwifruit. These results indicated the potential of EPS as packaging material of collection box in grading line to reduce bruise damage and to preserve the quality of kiwifruit.



中文翻译:

自由落体测试中包装材料对猕猴桃瘀伤的影响

不适当的包装和包装材料是猕猴桃收获后处理中青肿损坏的主要原因。进行该研究以鉴定在猕猴桃的分类和分级中用作收集箱的合适材料。盒子,木盒子,高密度聚乙烯(HDPE)盒子和发泡聚苯乙烯(EPS)盒子三种不同的材料被用来模拟猕猴桃在分级线上的掉落。在三种处理中,EPS盒子表面受冲击的水果的失重最低(4.6%),EPS盒子的水果的瘀伤指数和挫伤面积分别比木质盒子少36.2%和47.1%。此外,EPS箱中乙烯的峰值产量和呼吸速率分别比木箱中的峰值高32.6%和28.9%。与木箱和HDPE箱表面相比,EPS箱表面减慢了软化速度,减少了电解液泄漏和丙二醛积累。此外,在包括过氧化氢(H2 O 2),超氧阴离子(O 2–)和抗氧化酶的活性。集体数据表明,EPS盒子表面减少了因猕猴桃掉落而引起的不良生理变化。这些结果表明EPS在分级线中作为收集箱包装材料的潜力,可以减少青肿损伤并保持猕猴桃的质量。

更新日期:2020-06-22
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